Value of Patch Testing in Direct Diet Therapy for Eosinophilic Esophagitis (EoE)

March 25, 2019 updated by: Karthik Ravi, M.D., Mayo Clinic

Efficacy of Allergy Patch Testing in Directed Dietary Therapy of Eosinophilic Esophagitis: A Pilot Study

This study is being done to see if allergy patch testing (APT) can help predict effective dietary therapy in patients with eosinophilic esophagitis.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Patients are referred to Mayo Clinic Rochester with an establish diagnosis of EoE and are nonresponsive to proton pump inhibitor (PPI) medical therapy. Eligible patients will then meet with one of three investigators complete the Mayo Dysphagia Questionaire-30 Day (MDQ-30) following which a standardized Allergy Patch testing (APT) will be conducted. Thereafter, a standard clinically indicated Six Food Elimination Diet treatment completed. Patients will follow up with one of three investigators following the elimination diet who will be blinded to the results of the APT. During this visit responders and nonresponders will be identified and nonresponders will complete a directed elimination diet based on APT results.

Study Type

Interventional

Enrollment (Actual)

8

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Minnesota
      • Rochester, Minnesota, United States, 55905
        • Mayo Clinic

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 90 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion criteria:

  • Adults ages 18-90
  • Patients with EoE, defined as dysphagia with histologic finding of greater than or equal to 15 eosinophils per high powered field (eos per HPF) on index esophageal biopsy
  • Persistent symptoms and/or greater than or equal to 10 eos per HPF on esophageal biopsy after at least 8 weeks of twice daily PPI therapy

Exclusion criteria:

  • Patients with conditions known to be associated with esophageal eosinophilia, including Crohn's disease, Churg-Strauss, achalasia, and hypereosinophilic syndrome
  • Topical swallowed steroids within 8 weeks of study enrollment
  • Dermatologic conditions precluding application of Finn chambers to the skin for APT
  • Inability to read due to: Blindness, cognitive dysfunction, or English language illiteracy

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Diagnostic
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Allergy Patch Testing APT

Patient will undergo APT testing per the following protocol:

  • 2g of dry foods will be placed in 2ml of isotonic saline solution. The mixtures will then be placed in aluminum cups (ie Finn chambers) measuring 6 or 12 mm in diameter and adhered to the patient's back.
  • Foods to be included will be milk, wheat, egg, soy, peanut, tree nut, fish, shellfish, beef, corn, chicken, potato, pork, legumes, barley, rye, tomato, rice, fruits
  • The patches will be removed at 48 hours, and results read at 72 and 120 hours after application
  • Reactions will be classified as negative, + (erythema and scattered papules), ++ (erythema and papules), and +++ (erythema and vesicles).
Device: Allergy Patch Testing
Other Names:
  • APT
  • Patch testing
  • Allergy testing

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Sensitivity of Patch Testing
Time Frame: up to 120 hours after application of patch test
Sensitivity of the patch test will be defined by the number of subjects with total positive APT reactions correlated to histologic findings
up to 120 hours after application of patch test

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Mayo Clinic

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

August 1, 2014

Primary Completion (Actual)

September 1, 2017

Study Completion (Actual)

September 1, 2017

Study Registration Dates

First Submitted

August 26, 2014

First Submitted That Met QC Criteria

August 26, 2014

First Posted (Estimate)

August 28, 2014

Study Record Updates

Last Update Posted (Actual)

April 17, 2019

Last Update Submitted That Met QC Criteria

March 25, 2019

Last Verified

March 1, 2019

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 14-002050
  • UL1TR000135 (U.S. NIH Grant/Contract)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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